STM32初始化配置LAN8710
时间: 2023-07-04 18:06:23 浏览: 51
要初始化配置LAN8710,需要按照以下步骤进行:
1. 配置GPIO引脚:将LAN8710的MDIO和MDC引脚连接到STM32的GPIO引脚上,并将引脚设置为复用模式。
2. 配置时钟:配置STM32的时钟以确保其与LAN8710通信的时钟频率正确。
3. 配置ETH MAC:使用STM32的ETH MAC驱动程序将其配置为LAN8710的MAC地址。
4. 配置PHY:使用STM32的ETH PHY驱动程序将其配置为正确的PHY类型和速率。
5. 初始化ETH:使用STM32的ETH驱动程序初始化ETH控制器。
6. 启动ETH:启动ETH控制器以开始与LAN8710进行通信。
以下是一个示例代码片段,可以帮助你更好地理解如何初始化配置LAN8710:
```
/* Configure GPIO pins */
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = GPIO_PIN_1 | GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF11_ETH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* Configure clock */
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_ETH;
PeriphClkInitStruct.EthClockSelection = RCC_ETHCLKSOURCE_PLLSAI1;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Configure ETH MAC */
ETH_MACAddressConfigTypeDef MAC_InitStruct;
MAC_InitStruct.PhyAddress = 0;
MAC_InitStruct.MACAddr = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55};
MAC_InitStruct.AddressFilter = ETH_ADDRESS_FILTER_NORMAL;
MAC_InitStruct.WakeUpFilter = ETH_WAKEUP_FILTER_DISABLE;
MAC_InitStruct.PassControlFrames = ETH_PASSCONTROLFRAMES_BLOCKALL;
HAL_ETH_ConfigMAC(&heth, &MAC_InitStruct);
/* Configure PHY */
ETH_MACConfigTypeDef MACConf;
MACConf.AutomaticPadCRCStrip = ETH_AUTOMATICPADCRCSTRIP_DISABLE;
MACConf.BackOffLimit = ETH_BACKOFFLIMIT_10;
MACConf.CRCCheckingRxPacket = ETH_CHECKSUM_RX_ALL;
MACConf.CRCPadChecking = ETH_CRCPAD_CHECKSUM_DISABLE;
MACConf.CollisionWindow = ETH_COLLISION_WINDOW_28;
MACConf.DuplexMode = ETH_MODE_FULLDUPLEX;
MACConf.InterFrameGap = ETH_INTERFRAME_GAP_96BIT;
MACConf.JumboFrame = ETH_JUMBOFRAME_DISABLE;
MACConf.LoopbackMode = ETH_LOOPBACKMODE_DISABLE;
MACConf.ReceiveAll = ETH_RECEIVE_ALL;
MACConf.ReceiveBroadcast = ETH_RECEIVE_BROADCAST;
MACConf.ReceiveOwn = ETH_RECEIVE_OWN;
MACConf.ReceiveThresholdControl = ETH_RTHRESH_64BYTES;
MACConf.RetryTransmission = ETH_RETRYTRANSMISSION_DISABLE;
MACConf.Speed = ETH_SPEED_100M;
MACConf.Watchdog = ETH_WATCHDOG_DISABLE;
HAL_ETH_ConfigMACDMA(&heth, &MACConf);
/* Initialize ETH */
HAL_ETH_Init(&heth);
/* Start ETH */
HAL_ETH_Start(&heth);
```
请注意,上述代码片段是基于STM32 Cube HAL库的,因此你需要将其适当修改以匹配你的开发板和库版本。
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